Brain and Nervous System
Seizures are the tingling or twitching in small areas of the body, such as the face, or the loss of consciousness and uncontrolled jerks of the whole body. Recurrent seizures are called epilepsy. Seizures may affect only part of the brain, or be generalized, causing grand mal symptoms of headache, drowsiness, dizziness, and a feeling of discomfort or "aura," followed by unconsciousness, stiffening, or uncontrollable jerking of the body, or petit mal which usually affects children and can be difficult to detect since it may seem as if the child is just daydreaming.

